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Thunder Products TPI Valve
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- TPI valve works with your air box lid to add air when you need it, and keep the intake stock when you don't.
- 2 5/8" square TPI valve filters air and vent size is adjustable.
- Comes with a black medium filter, mounting hardware and instructions.
- One TPI valve is adequate for most machines but for machines with engines 500cc and over, or with highly modified engines two valves work best.
Thunder Products TPI Valve Reviews
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0 of 0 people found this review helpful.
as expected
tim in MI
Comments On May 07, 2013:as expected
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0 of 0 people found this review helpful.
Worked great!
DAVE in OH
Comments On Oct 16, 2009:I was taking a trip to UT..I live in OH. Some forums recommended installing these to deal with the elevation difference. Worked great, didn't need to rejet. I'd recommend this product.
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TPI valve
RANDALL in WV
Comments On Oct 18, 2009:Good product, better than drilling holes in your airbox, safer than removing your airbox lid.
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0 of 0 people found this review helpful.
works great! gets brittle easy though!
Michael in NV
Comments On Oct 02, 2009:put 2 in my warrior 350 air cover and noticed better throttle response! but went to close one of them after about a month and the plastic broke.... wont buy again cuz the price is way to steep! now i just drill holes where i need them and that seems to work even better!
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TPI valve
JEREMY in CA
Comments On Jan 30, 2008:works great
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Small
Tyler in ME
Comments On Dec 24, 2007:I thought it would be a lot bigger and allow more air. Well it's like a 1.5inch square opening. Not very cool.
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Works as claimed
JAMES J in NY
Comments On Dec 16, 2007:I have two installed in air box cover of my 05 KFX400. I open or close the shutters based on temperature (summer vs winter). Easier than rejetting the carb every season.
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